42545507 has 2 divisors, whose sum is σ = 42545508. Its totient is φ = 42545506.

The previous prime is 42545497. The next prime is 42545539. The reversal of 42545507 is 70554524.

It is an a-pointer prime, because the next prime (42545539) can be obtained adding 42545507 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42545507 - 2⁶ = 42545443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42545557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21272753 + 21272754.

It is an arithmetic number, because the mean of its divisors is an integer number (21272754).

Almost surely, 2^42545507 is an apocalyptic number.

42545507 is a deficient number, since it is larger than the sum of its proper divisors (1).

42545507 is an equidigital number, since it uses as much as digits as its factorization.

42545507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 42545507 is about 6522.6916989844. The cubic root of 42545507 is about 349.1011138235.

The spelling of 42545507 in words is "forty-two million, five hundred forty-five thousand, five hundred seven".